Optoelectronics Letters

, Volume 13, Issue 6, pp 414–418 | Cite as

SNR improvement in self-heterodyne detection Brillouin optical time domain reflectometer using Golay pulse codes

  • Yong-qian Li (李永倩)
  • Xiao-juan Li (李晓娟)
  • Han-bai Fan (范寒柏)
  • Qi An (安琪)
  • Lixin Zhang (张立欣)
Article
  • 29 Downloads

Abstract

The application of Golay pulse coding technique in spontaneous Brillouin-based distributed temperature sensor based on self-heterodyne detection of Rayleigh and Brillouin scattering is theoretically and experimentally analyzed. The enhancement of system signal to noise ratio (SNR) and reduction of temperature measurement error provided by coding are characterized. By using 16-bit Golay coding, SNR can be improved by about 2.77 dB, and temperature measurement error of the 100 m heated fiber is reduced from 1.4 °C to 0.5 °C with a spatial resolution of 13 m. The results are believed to be beneficial for the performance improvement of self-heterodyne detection Brillouin optical time domain reflectometer.

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Copyright information

© Tianjin University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  • Yong-qian Li (李永倩)
    • 1
  • Xiao-juan Li (李晓娟)
    • 1
  • Han-bai Fan (范寒柏)
    • 1
  • Qi An (安琪)
    • 1
  • Lixin Zhang (张立欣)
    • 1
  1. 1.Department of Electronic and Communication EngineeringNorth China Electric Power UniversityBaodingChina

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